@data{ sbdb100, author = { Pereira, PJB }, publisher = { SBGrid Data Bank }, title = { X-Ray Diffraction data for: Medicago truncatula glutamine synthetase. PDB Code 4IS4 }, year = { 2015 }, doi = { 10.15785/SBGRID/100 }, url = { https://doi.org/10.15785/SBGRID/100 } }